The investment target period of money market funds is generally within 1 year. Money market funds refer to funds that only invest in money market instruments. Money market instruments usually refer to short-term financial instruments with a maturity of less than 1 year, such as treasury bills, commercial bills, bank time deposit certificates, short-term government bonds, corporate bonds and other short-term securities.

Money market instruments are also called cash investment instruments because of their short term. The trading methods of ordinary money market funds include OTC subscription and OTC redemption.